Biosphere (Grade 10 NSC Matric Life Sciences): Flashcards
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Biosphere definition
Biosphere definition
Part of Earth where all living things exist
Four spheres of Earth
Four spheres of Earth
Biosphere, atmosphere, hydrosphere, lithosphere
Hydrosphere definition
Hydrosphere definition
All water on, above, and below Earth's surface
% of Earth's surface covered by hydrosphere
% of Earth's surface covered by hydrosphere
71%
Lithosphere definition
Lithosphere definition
Earth's outermost solid layer (rocky crust)
Atmosphere definition
Atmosphere definition
Layer of gases surrounding the planet
Key protection provided by atmosphere
Key protection provided by atmosphere
Protects from harmful UV radiation
Relationship between Earth's four spheres
Relationship between Earth's four spheres
Constantly interacting and influencing each other
Deforestation impact on lithosphere
Deforestation impact on lithosphere
Without tree roots, soil erosion increases
Deforestation impact on atmosphere
Deforestation impact on atmosphere
Increased atmospheric CO2 levels